The Tonight Show Starring Jimmy Fallon Season 4 Megyn Kelly, Dave Franco, Fergie Season 4, episode 207 Megyn Kelly, Dave Franco, Fergie 1.0 / 10 September 21, 2017 45 min Previous episode Ben Stiller, Fred Armisen, Little Big Town, Kacey Musgraves and Midland Next episode Will & Grace Cast, Colin Jost, Bruce Bozzi Jr., Billie Joe Armstrong